As Battlefield 3's 'Back to Karkand' downloadable expansion bears down upon us like a tank or jet or some other fast machine of war, DICE has released a new trailer showing off the remade 'Gulf of Oman' map, and teasing a terrifying vehicle.

As Battlefield 3's 'Back to Karkand' downloadable expansion bears down upon us like a tank or jet or some other deadly machine of war, DICE is showing off the pack's remake of the classic Battlefield 2 map 'Gulf of Oman.' The new trailer also teases "a classified fourth vehicle bound to strike fear into the very hearts of the enemy," which appears to be a lovely little bulldozer.

Along with Gulf of Oman, the DLC includes remakes of classic series maps Strike at Karkand, Wake Island, and Sharqi Peninsula. It'll also add ten weapons, four vehicles, including the bulldozer, a new 'Conquest Assault' mode, and the new Assignments progression track.

Back to Karkand is set to take off in December, hitting PlayStation 3 one week before PC and Xbox 360 as per EA and Sony's exclusivity deal. This arrangement was supposed to replace the once-promised free copy of Battlefield 1943 for PS3 players, but EA has pulled a U-turn is now offering that for free too.

Those who pre-ordered Battlefield 3 should have a voucher to get Back to Karkand for free, but it'll cost everyone else $15 (1,200 Microsoft Points).